Kim Kardashian & Kanye West's Chinatown Photo Shoot Smooch

With her demanding career not even affording her 24 hours off on Mother's Day, Kim Kardashian was hard at work in Chinatown, Los Angeles on Sunday (May 13).

The E! reality hottie donned a shorter 'do and sexy black frock as hair, makeup and wardrobe staffers got everything just right for a fashion magazine photo shoot.

Also getting a special visit on set from her rap star beau Kanye West - with whom she shared a smooch in between poses - Miss Kardashian tweeted of the day's doings, "Happy Mothers Day!!! Had an amazing breakfast with the family...now off to a special shoot today!"

Meanwhile, Kim also took time to pen a heartfelt message to all of the mothers in her tight-knit family - including her mom, Kris Jenner, her sister, Kourtney, and her grandma, MJ.

Posting the note on her personal website, the 31-year-old told, "To my mom on Mother’s Day. I love you more than you know. You are more than my mother, you are my best friend. You have always been there for me no matter what, and my sisters, my brother and I are all so lucky to have you. Where would I be without you?

To Kourtney, my big sister and the most incredible mom to Mason. I am so proud to call you my sister and my friend. This next next year we will have another little angel with us, and I can’t wait to meet her. You are such an amazing mom to Mason and I know you’ll be the best mom in the world to your new daughter.